Hi
@Stephanie Bardwell 
Welcome To BYC
Do you have a video of how she sounds?
When you say she sounds like she has laryngitis - what do you mean - any symptoms of coughing, sneezing, gurgling, rales, mucous from the nostrils, watery eyes/discharge or facial swelling?
Check to make sure there are no obstructions inside the beak - food, plaques, canker, lesions. Ensure that her crop is emptying overnight - crop issues can make them sound a bit raspy. Look at her nares (nostrils) to see if they are free and clear. Dry/dusting or moldy feed and bedding can contribute to respiratory symptoms as well. Respiratory illness is usually accompanied by other symptoms so keep close watch on her.
Antibiotics can help with secondary infections due to respiratory illness - if there are no other symptoms and she is eating/drinking and active, you may want to take a wait and see approach. You can try something like VetRx to see if that makes a difference - add some poultry vitamins and extra protein to her daily routine for a few days to give her boost.
imho, Oxytetracycline is not as effective when treating secondary infections due to respiratory illness as injectable Tylan50 - this can be given orally or by injection and is found at most feed stores like Tractor Supply.